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Can you tell me what the trouble code P2440 means for a Toyota Tundra?
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3 answers
★ Top Answer
The P2440 error code in a Toyota Tundra is linked to a secondary air valve that is stuck in the open position. This valve is meant to introduce fresh air into the truck's exhaust to reduce harmful emissions. The truck's computer system, known as the PCM, monitors a voltage signal to assess the pressure and volume of this fresh air injection. If the secondary air system reports a voltage reading that is 10 percent higher than normal, the P2440 error code will be triggered. The driver may notice a lit "check engine" indicator, loud noise from the exhaust, engine stalling when idle, and hesitation during acceleration. The causes of this issue can vary and might include a faulty injection valve, a malfunctioning injection pump or pressure sensor, as well as problematic vacuum switch wiring, connections, pins, or valves.
More answers
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The P2440 trouble code signals that the PCM discovered the secondary air injection system's switching valve is stuck in the open position on bank 2.
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Can you tell me where to find the secondary air injection component on a 2009 Toyota V6 and provide a description of its appearance?
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